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Thread: Stepper Driver A4988
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03-11-2015, 03:56 AM #1
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Stepper Driver A4988
I would like to test the current on one of my stepper drivers - can someone please advise where I put the +ve multimeter measuring lead ?
thanks
Graham
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03-11-2015, 03:54 PM #2
Why do you want to do this? The motor should have the current rating stamped on the nameplate.
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03-11-2015, 05:02 PM #3
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If you mean measuring the reference voltage or vref, the positive probe should be touched to the round metal circle to the right of the heat sink on the middle-right of your picture. The circle is the trimpot, which you turn to adjust the vref.
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03-12-2015, 03:23 PM #4
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03-12-2015, 03:51 PM #5
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Holes and pockmarks in print walls
Yesterday, 09:14 AM in General 3D Printing Discussion